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Making the Leap to Engine Mods :)

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Old Dec 2, 2008 | 10:18 PM
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Default Making the Leap to Engine Mods :)

So i have finally decided to make a leap to start modding the engine. My obsession has grown and i have to meet the demand.

Now i don't know jack squat about engine mods, can anyone tell me and show some links as to what parts are available for the LS4.

I have heard of compcams and their ls2 camshaft. Is this going to be compatible and if it is will i have to buy an supplemental parts to make it compatible with everything else into the engine. Basically do i need other "new" parts to make the "new" parts work?

Do you guys recommend i do anything to the tranny as of yet? So far i feel it is holding up and doesn't show signs of overheating or major slipping. An auxiliary cooler and aluminum pan will help keep temps down, so i probably will do that with the engine mods.

Are these engine mods reliable and keep the LS4/rest of the car just as reliable as it is in stock form?
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Old Dec 3, 2008 | 07:13 AM
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You need to have a plan on what you want to do and go from there if you are going to
go way up in HP you will need to strength·en the tranny.
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Old Dec 3, 2008 | 08:10 PM
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a cold air intake and an exhaust are a good start
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Old Dec 4, 2008 | 07:23 AM
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He already has that.
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Old Dec 4, 2008 | 10:26 AM
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im pretty sure i got all the basic bolt ons available for this car except maybe the throttle body spacer and after-market MAF. one thing that sucks is that i have lost a good amount of low end torque, so im thinking about putting back the stock intake and just getting an K&N panel filter.


Anyway, back to the engine mods. Ive been searching the forums and i see that most people are doing rockers, pushrods, and valve springs. I saw alot of companies as well (compcams, Crane, Harland Sharp, Summit, patriot performace, etc...). Im looking for a definitive answer from those people who have done these mods as to what parts/companies are most recommended.

Do these parts offer the same or better reliability if any as the stock components? Are they easy enough to do them yourself?

Thanks.
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Old Dec 4, 2008 | 11:33 AM
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you can use any ls1/6 components. yella terra, harland sharp, etc rockers. 1.8 if youre not gunna be switchin the cam later. most people do the comp springs/pushrods/retainers/locks. but ls6 beehive are good too.

i would wait til someone does that dod cam swap before i spent anythign on parts that may not be needed.
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Old Dec 4, 2008 | 11:55 AM
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Neilownz is that an all-in-one set your referring to with the comp?? Links?


I found some links and want to know if you guys think these are good parts.

Crane Cams rockers 144759A-16
http://store.summitracing.com/partde...6&autoview=sku

Crane Double Valve Springs 144832-16
http://store.summitracing.com/partde...5&autoview=sku

Comp cams high tech pushrods #7955-16
http://store.summitracing.com/partde...6&autoview=sku

Crane Cams valve locks 99108-1
http://store.summitracing.com/partde...5&autoview=sku

Crane Steel Valve Spring Retainers 144944-16
http://store.summitracing.com/partde...5&autoview=sku


Anything else needed?????? lol

What are ls6 beehives? Also can the ls6 intake be used on this as a swap or does it have to be modified to fit?
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Old Dec 4, 2008 | 12:57 PM
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The ls6 intake will not work
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Old Dec 4, 2008 | 01:34 PM
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http://texas-speed.com/shop/item.asp?itemid=208
http://texas-speed.com/shop/item.asp?itemid=211

Texas speed has hardened pushrods and everything else as well.

I'm using comp 7955-16 pushrods with harland sharp 1.8 rockers on the PRC 5.3L Stage 2.5 heads.

http://texas-speed.com/shop/item.asp?itemid=84&catid=40

http://www.lingenfelter.com/store/c42.html

Search on ebay too. Might find stuff cheaper.
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Old Dec 4, 2008 | 03:18 PM
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Hey do those 5.3 stage 2 heads make a difference?? they sound good on paper, but what do they do to the drivability of the car...ie where do those extra potential 40hp become significant?
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Old Dec 4, 2008 | 10:46 PM
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i have no idea. its probably all top end or over the top. been hittin the t/c a lot with the damn snow etc. i should go to a dyno someday.
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